#include <bits/stdc++.h>

using namespace std;

int a,b,c;

int main ()
{
	cin >> a >> b >> c ;
    int n,m;
    n = max (max(a,b),c);
    m = min (min(a,b),c);

     __gcd(a,b);

	cout << m <<"/" << n;
	
    re turn 0; 
 }

dl们 第二个点wa了